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This article is cited in 1 scientific paper (total in 1 paper)
Group analysis of one-dimensional gas dynamics equations in Lagrangian coordinates and conservation laws
Ch. Kaewmaneea, S. V. Meleshkob a Naresuan University, 65000, Phitsanulok, Thailand
b School of Mathematics, Institute of Science, Suranaree University of Technology, 30000, Nakhon Ratchasima, Thailand
Abstract:
A group analysis of the second-order equation including one-dimensional gas dynamics equations in Lagrangian coordinates as a particular case is performed. The use of Lagrangian coordinates makes it possible to consider one-dimensional gas dynamics equations as a variational
Euler–Lagrange equation with an appropriate Lagrangian. Conservation laws are derived with the use of the variational presentation and Noether theory. A complete group classification of the Euler–Lagrange equation is obtained; as a result, 18 different classes can be classified.
Keywords:
group analysis, gas dynamics equations, Lagrangian coordinates, group classification, conservation laws.
Received: 14.10.2019 Revised: 14.10.2019 Accepted: 28.10.2019
Citation:
Ch. Kaewmanee, S. V. Meleshko, “Group analysis of one-dimensional gas dynamics equations in Lagrangian coordinates and conservation laws”, Prikl. Mekh. Tekh. Fiz., 61:2 (2020), 40–59; J. Appl. Mech. Tech. Phys., 61:2 (2020), 189–206
Linking options:
https://www.mathnet.ru/eng/pmtf338 https://www.mathnet.ru/eng/pmtf/v61/i2/p40
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